波動系數 的英文怎麼說

中文拼音 [bōdòngxìshǔ]
波動系數 英文
coefficient of fluctuation
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 波動 : 1 （不穩定） undulate; fluctuate; unsettle; surge; rise and fall 2 [物理學] wave （motion）; wave...
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g

    如果通過激光冷卻能使原子速度降至很小甚至為零，光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處，其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小，因此，如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。
  2. This paper discusses the designing and making of the dynamic testing systems of engine electronic control system. base on the construction and operation principle of santana 2000gsi m3. 8. 2 engine electronic control systems, design and manufacture led circuit of dynamic testing and fault imitating electronic control unit. on the inspect board, design and equip with motronic 3. 8. 2 ecu i / o measuring joints, design and set up obd - ii diagnostic communication link, design and install fuel pressure inspecting meter. depend on the obd - ii diagnostic communication link and ecu i / o measuring joints, this dynamic testing system can inspect engine electronic fuel injection system, distributorless ignition system, idle speed control system and evaporative emission control system, and can inspect m3. 8. 2 sensors, ecu and actuators, and can interrogate fault memory and erase fault memory ; and can analyse data stream ; and can carry out fault imitating. besides, this paper analyses sensors and actuators typical fault w aves

    2電控單元電路連接器設計製成輸入輸出電子控制檢測端子，並在檢測面板上布置了obd -診斷插座和燃油壓力表。使該動態測試系統能實現對電噴發動機的燃油系統、直接點火系統、怠速控制系統和燃油蒸氣排放控制系統的動態檢測；並通過obd -診斷座、 ecu輸入輸出檢測端子和故障模擬處理單元實現對電噴發動機電控系統各傳感器、電控單元、執行器進行故障碼讀取與清除；動態數據讀取和波形測試和故障模擬等。此外，本論文還分析了傳感器和執行器典型故障波形。
  3. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  4. As a result, the electromagnetic field intensity is changed accordingly and fluctuating current in the damper coil is created. damping force is mostly produced because of the phase difference between fluctuating current and displacement of rotor. the formulas of fluctuating current and damping coefficient are deduced theoretically, and the calculated results are consistent with the experimental results

    通過分析發現電磁阻尼器線圈內由於轉子渦動時變化的磁場而產生的波動電流與轉子位移間的相位差是產生阻尼的主要原因，推導了波動電流、阻尼系數的計算公式，並通過實驗展示了被動式電磁阻尼器的阻尼效應。
  5. It does not need much area, not any pollution, not consuming much electricity power, not need much cost. gshp combined floor radiation air - conditioning system possess high seasonal average cop value and great capacity of edaphic depositing heat energy, can ease up supplied water temperature fluctuating with the change of the outdoor air temperature

    地源熱泵技術聯合地板輻射對房間進行冷暖聯供的形式，具有地源熱泵季節性平均性能系數高、土壤蓄熱能力強、能緩解空氣源熱泵存在的供冷供熱能力隨環境溫度波動大的矛盾等優點。
  6. The coefficient of variation of saturated water content decreased with the depth of profile. the coefficient of variation of bulk density and field capacity fluctuate with depth of soil

    飽和含水量的變異系數都隨深度的增加逐漸降低，含水量、容重和田悶持水量的變異系數隨深度的呈波動變化。
  7. Based on the research of the characteristics of piezoelectric ceramic, this paper presents the analysis of the movement of the stator surface points and work principle of motor. this paper describes a theory about the influence of the ultrasonic vibration on the frictional properties of ultrosonic dring, and finds that the horizontal vibration produces friction driving force and vertical vibration affects horizontal driving effect

    並且對行波型超聲波電動機的減摩現象進行了研究，發現在接觸區定子表面上一點的水平振動產生摩擦驅動力，垂直振動只起影響水平驅動效果的作用，得出垂直方向超聲振動具有減振作用是引起超聲驅動動摩擦系數降低的原因。
  8. In succession, it analyses, macrocosmicly and microcosmicly, the impact of the real estate cycle making by the wto and brings forward some strategieso chapter five studys the serious results of our nation " s real estate foam, it studys the causing reasons of the foam and the procreant mechanism of it and distinguishs the foam from the ordinary cyc - le fluctuation, and puts forward a set of index to feretell the foam in advance

    第五章研究了我國房地產周期波動過程中的房地產泡沫現象及其產重後果，分析了房地產泡沫產生的原因和產生的機理及其與周期正常波動的本質區別。為防範房地產泡沫，提出一套泡沫預警指標體系，建議採用功效系數法建立房地產泡沫預警系統，從而達到監側房地產泡沫的目的。
  9. The dynamic force - displacement relation curve is of crucial important to the design and operation of mechanical impact devices. using one - dimensional wave mechanics and characteristic line theory, this paper presents a testing method for determination of dynamic force - displacement relation curve from one - point strain measurement on an elastic rod endface. the principle of measurement, data processing method and experimental results for penetration into granite are discussed. 4figs., 5refs

    沖擊載荷下彈性桿端的作用力-位移關系曲線是沖擊機械繫統研究的重要內容.基於一維波動力學方程，應用特徵線方法，探討了已知一點應變求取彈性桿端的作用力-位移曲線的測試原理與數據處理方法，以及在花崗巖上沖擊鑿巖機具的測試結果，對一點應變測試法的可行性進行了論證.圖4 ，參5
  10. That means the controlled temperature al1ow waving in a range in a period. when the change of the temperature indoor is out of the range we enacted, the system begin to regulatc. compensate the windage last time leave behind } before decide the heatsupply parameter for the next time

    即允許被控室內溫度在一段時間內存在一定幅度的波動，當室溫變化幅度超過設定值時系統開始調節，在確定下一時間段的供熱參數之前對上一時間段的遺留偏差在短時間內給予補償。
  11. In light of market risk, there are sensitivity measurement method and volatility measurement method as well as the concepts about risk measurement, such as variance, duration, 3 - coefficient, 5 - coefficient and value at risk. and in light of credit risk, there are accounting - based ratio measurement method and volatility - based measurement method, as well as the related concepts, such as credit rating, z - score, transition matrix, expected default frequency

    其中，針對市場風險度量的方法包括靈敏度測量風險方法和波動性測量風險方法，與之相關的風險度量概念有方差、持續期、系數、類系數和在險價值；針對信用風險度量的方法包括基於財務比率的風險測量方法和基於波動性的風險測量方法，與之相關的風險度量概念有信用評級、 z分數、轉換矩陣、違約頻率。
  12. Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles

    對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。
  13. And the experimental results indicated that the pressure fluctuant of cng engine was less than gasoline engine

    通過比較各缸最大壓力的變動系數，表明燃燒天然氣的循環間波動小於燃燒汽油。
  14. Making use of the time series exhibitions of the fluctuation - rate datum, we make our study for the following two purposes : one is to observe whether the preannouncing companies " temporal - condition variance of the series of the return rate conforms to the demand of sta bility ; the other is to decide whether the preannouncing companies " stocks have asymmetrical - information adjustment, this is to say, to decide how the companies response to good or bad news

    為了進一步檢驗盈餘預告新規則實施效果，我們考慮從波動性入手對股票市場的穩定性進行系統分析。我們嘗試利用波動率數值的時間序列表現進行研究，力圖了解：預告公司股票日收益率序列的時變條件方差是否滿足穩定性要求。預告公司股票是否存在信息非對稱性調整現象，即對利好利空消息分別做出何種反應。
  15. ( 2 ) this paper presents some basic theory about wavelet analysis, and proposes a fast wavelet ( packet ) algorithm based on sliding window. by storing the part of wavelet packet coefficients in memory in advance, we avoid repeating calculation and gain a fast wavelet algorithm at the cost of increasing some storage space

    （ 2 ）本文介紹了小波分析的一些基本理論，提出了一種基於滑動時窗的小波（包）快速演算法，通過預先存儲一部分小波（包）系數，避免重復計算過程，可以用較小的存儲空間為代價，獲得了計算效率很高的小波（包）變換快速演算法。
  16. Due to its high order, nonlinear, and strong coupling, valid mathematical model of theflexiblefinishardtoget. inthisthesis, therelationofthewaveparametersoftheflexiblefinandthe positions of all rays is proposed. considering the influence of liquid and the flexiblemembrane, this thesis gives an analysis about the kinematical model of the ray, and gets thedynamicformulationbyamethodofkaneequation. the algorithm oftheundulatorycontroloftheflexiblefinisdesigned. adoptingthestrategyofdistributedcontrol, thisthesisgives arespectiveresearchonthe servo control oftherayat thenode level and the coordinated control of the flexible fin at the coordinated level

    本文給出了柔性長鰭的波動參數與各鰭條輸出位置之間的關系，並就單根鰭條的運動學和動力學模型進行分析，利用動力學建模的kane方程，結合水下環境中流體以及鰭條間柔性蹼對鰭條的影響，得到了單根鰭條的動力學方程。
  17. Judging by the different magnitude and direction of the wavelet packet coefficient modular maximum, we can select the single phase - to - earth line. the method using wavelet singularity detection theory to extract the fault time is discussed. a fault distance measurement algorithm combining wavelet analysis used for separating the character from the transient fault signal with artificial neural networks used for the nonlinear approximation from the transient character to fault distance is presented

    論文提出利用各個出線零序電流在頻帶上小波包系數模極大值的方向和大小的不同來實現故障選線，討論了利用小波分析的奇異性來判斷故障啟動時刻，提出將小波分析和人工神經網路結合，利用人工神經網路的非線性逼近能力，實現故障暫態量到故障距離的非線性映射，完成測距。
  18. The simulation calculations and experiment results are also given. the self - mixing speckle interference provides for prospective new velocity sensor applications

    通過實驗也得到了移動速度和波動次數的關系，並對速度進行測量。
  19. Aerodynamic coefficient identification is a interdisciplinary subject between mechanics, informatics and control theory. this thesis also gives an overview of the development direction in this field, especially introducing the application of neural network in the aerodynamic coefficients identification, which gives the theoretical basis of using wavelet network in modeling of aerodynamic coefficients

    氣動系數辨識為介於力學、信息學和控制論之間的一門交叉學科，本文對該領域的發展方向進行了分析，其中特別分析了神經網路在氣動力系數建模中的應用狀況，這為本文採用小波網路氣動系數建模打下理論基礎。
  20. The main innovation of the dissertation lies in its calculation of stock market bubble coefficient and its creative application of undulation coefficient theory in physics to forecasting the fluctuation of stock market

    本文最主要的創新在於，以1994 - 2002年每月的市價總值數據為基礎，計算了股市泡沫系數，並創造性地把物理學的波動系數理論應用到測定股市波動當中。
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